如何用C++解析一个逗号分隔的CSV文件

#include <iostream>
#include <fstream>
#include <sstream>
#include <vector>
#include <string>

void parseCSV(const std::string& filename) {
    std::ifstream file(filename);
    std::string line;

    while (std::getline(file, line)) {
        std::vector<std::string> row;
        std::stringstream ss(line);
        std::string cell;

        while (std::getline(ss, cell, ',')) {
            row.push_back(cell);
        }

        // 打印这一行的数据
        for (const auto& field : row) {
            std::cout << field << " ";
        }
        std::cout << "\n";
    }
}

struct Person {
    std::string name;
    int age;
    std::string city;
};

while (std::getline(file, line)) {
    std::stringstream ss(line);
    std::string name, ageStr, city;

    std::getline(ss, name, ',');
    std::getline(ss, ageStr, ',');
    std::getline(ss, city, ',');

    Person p{ name, std::stoi(ageStr), city };
    // 存入vector或其他容器
}

std::ifstream file(filename);
if (!file.is_open()) {
    std::cerr << "无法打开文件: " << filename << "\n";
    return;
}